In: Economics
(a)
In following diagram, MC0 and MR are initial marginal cost and marginal revenue curves. An increase in wage rate will increase the marginal cost of production, shifting MC curve upward from MC0 to MC1 as shown below. Since the industry is competitive, MR is horizontal at the level of market price P0.
(b) Since a competitive firm maximizes profit by equating MR (Price) with MC, initial equilibrium was at point A with output q0. After wage hike, new equilibrium is at point B with lower output q1. Number of cheeseburgers will fall.
(c) Since higher wage rate will increase the cost of production, McDowells will decrease production and lower its demand for labor. Therefore, more workers will not be able to get work there at higher wage, and some of the existing workers will be laid off because of higher wage rate, causing unemployment.